12691596 has 12 divisors (see below), whose sum is σ = 29613752. Its totient is φ = 4230528.

The previous prime is 12691583. The next prime is 12691621. The reversal of 12691596 is 69519621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12691596² = 322153218054432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528805 + ... + 528828.

Almost surely, 2^12691596 is an apocalyptic number.

It is an amenable number.

12691596 is an abundant number, since it is smaller than the sum of its proper divisors (16922156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12691596 is a wasteful number, since it uses less digits than its factorization.

12691596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057640 (or 1057638 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 12691596 is about 3562.5266314794. The cubic root of 12691596 is about 233.2591809723.

The spelling of 12691596 in words is "twelve million, six hundred ninety-one thousand, five hundred ninety-six".